RNA was extracted from frozen kidney tissue by trizol and chloroform separation with genomic DNA removal by DNA-free DNA removal kit (Thermo Fisher). cDNA was generated by FireScript RT kit (Solis Biodyne) as per manufacturer’s instructions. RT-PCR was performed with validated primers for Gapdh (housekeeping control) (24 (link)), Il1b (25 (link)), Tnfa (Fwd 5’ CCCTCACACTCAGATCATCTTCT 3’, Rev 5’ GCTACGACGTGGGCTACAG 3’), Ccl2 (26 (link)), Cxcl1 (27 (link)) and PowerUp SYBR Green Master Mix (Applied Biosystems) for 40 cycles under single-plex conditions (QuantStudio 6, Life Technologies). cDNA-specific amplification was ensured by inclusion of reverse transcriptase-negative and template-negative controls. Samples were run in triplicate and cycle threshold values were determined by automatic threshold analysis (QuantStudio Software), with the 2-ΔΔCt method used to calculated relative gene expression from the average threshold of each sample, relative to the average of the C57BL/6 group.
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